# Pre-calculus

posted by
**Mary**
.

ARE THESE ANSWERS CORRECT?

Directions: The playing times for 20 songs on a top-hits radio station are recorded in the chart below.

Using the times listed in the chart, circle the correct answer for questions 1-3 below.

Playing Time (minutes:seconds)

3:32 3:24 2:54 3:07 4:52 3:45 2:39 3:09 3:34 3:26

3:35 4:17 4:03 3:52 5:10 4:59 3:07 4:00 3:07 2:56

1. In a stem-and- leaf plot of this data where 33|2 represents 3:32, which of the following stems has the

fewest number of leaves?

A. 25

B. 30

C. 45

D. 51

2. In a frequency distribution of this data, how many data values are in the class 3:00 – 3:30?

A. 11

B. 5

C. 6 MY ANSWER because between 3:00- 3:30 has frequency of 6 data

D. 7

3. In a histogram of this data, which bar would have the greatest height?

A. 3:00-3:15 MY ANSWER

B. 3:15-3:30

C. 3:30-3:45

D. 3:45-4:00

Statistics - Mary, Sunday, February 8, 2009 at 12:55am

ARE THESE ANSWERS CORRECT?

Directions: The playing times for 20 songs on a top-hits radio station are recorded in the chart below.

Using the times listed in the chart, circle the correct answer for questions 1-3 below.

Playing Time (minutes:seconds)

3:32 3:24 2:54 3:07 4:52 3:45 2:39 3:09 3:34 3:26

3:35 4:17 4:03 3:52 5:10 4:59 3:07 4:00 3:07 2:56

1. In a stem-and- leaf plot of this data where 33|2 represents 3:32, which of the following stems has the

fewest number of leaves?

A. 25

B. 30 MY ANSWER

C. 45

D. 51

2. In a frequency distribution of this data, how many data values are in the class 3:00 – 3:30?

A. 11

B. 5

C. 6 MY ANSWER because between 3:00- 3:30 has frequency of 6 data

D. 7

3. In a histogram of this data, which bar would have the greatest height?

A. 3:00-3:15 MY ANSWER

B. 3:15-3:30

C. 3:30-3:45

D. 3:45-4:00